Excavator and loader



Mar. 27, 1923.

N. 0. WOODIN. EXC'AVATOR AND LOADER ORIGINAL FILED APR. I2, 1920.

Patented Mar. 27, 1923.

UN'EED NORMAN G. WOODIN, OF PRAIRIE DU SAC, WISCONSIN.

EXCAVATOR AND LOADER.

Application filed April 12, 1920, Serial No. 373,045. Renewed September9, 1922. Serial No. 587,226.

To all whom it may concern Be it known that I, NORMAN C. Woonm, acitizen of the United States, and resident of Prairie du Sac, in thecounty of Sauk and State of Wisconsin, have invented certain new anduseful Improvements in EX- cavators and Loaders; and I do hereby.declare that the following is a full, clear, and exact descriptionthereof.

My invention relates to new and useful improvements in excavating andloading apparatus of that type including a suitably supported inclinedtrackway upon which a drag line scoop or scraper is adapted to ridewhereby to procure a desired elevation of the scoop or scraper fordumping the same into a wagon-body or other receptacle located below theupper end of the trackway.

i It is in general the object of my invention to simplify and otherwiseimprove the structure and to lessen the power requirements of apparatusof this character and increase the convenience of operation thereof.

It is more particularly an important ob ject of my invention to providean arrangement whereby an ordinary drag scoop or scraper may be causedto ride upwardly on an inclined trackway and to effect a positivedumping action upon reaching the upper end of the trackway.

A more detailed object resides in the provision of a carriage-memberriding on the trackway and adapted to receive the scoop or scraper tocarry the same upwardly and dump it upon reaching the upper end of thetrackway.

A still further object resides in the pro-.

vision of an arrangement for imparting an automatic continuous jarringaction to the scraper bucket in its dumping position on the machinewhereby to insure the dislodgment of material which may tend to stick inthe bucket.

With the above and other objects and advantages in view, my inventionresides more particularly in the novel combination, formation andarrangement of parts'hereinafter described and pointed out in theappended claims.

In the accompanying drawings I Figure 1 is a plan view of an excavatingand loading machine embodying my invens tion;

Figure 2'is a side elevational view of the machine, the dumping positionof the ll ucket and carriage being shown in dotted ines.

Figure 3 is an end view of the machine;

Figure 4 is a detailed sectional view of the brake mechanism for thedrag-line drum. v

Referring now more particularly to the accompanying drawings, thepresent embodiment of my invention is mounted on a turn-table frame 10carried by the frame 11 of a truck including the rear drive. wheels 12and the front wheels 13 which may be' steered in any suitable manner(not shown) whereby the entire machine may be readily transported fromplace to place, the turntable mounting of the frame 10 facilitating theplacing of the trackway structure in desired position;

A track-supporting superstructure is mounted on the frame 10,-comprisinga pair of bars 14 extending from one end of the frame obliquely upwardthereover and projected outwardly of vthe other end of the frame andterminating in an end head 1=5 carrying a cablersheave 16, vsaid headbeing braced by oblique bars 17 extending from the head to the adjacentend portion of the frame 10 and secured to the housing of an engine 18for supplying the necessary power. A sheathing-plate 19 is secured tothe super-structure bars 1 1 and covers the operating mechanismhereafter to be described, said sheathing terminating in adependingdischarge chute 20 adjacent the up, per end of the super-structure.

Channel-tracks are mounted at the sides of the inclined super-structure,each track comprising a lower channel-beam 21 rigidly secured to thesuper-structure by bars- 225' and an upper channel-section 23 having itsadjacent .end beveled to abut the correspondingly beveled upper end ofthe lower section 21, and having its upper end piv otally connected withthe superstructure," this pivotal connection being procured in thepresent instance by arms 24 projecting downwardly from the upper. endsof the channel-sections and provided adjacent said sections withlongitudinal slots receiving" the end portions of a pivot-shaft 25. Therear ends of the channel-sections 23 are connected by a transverse bar26 which seats upon the superstructure whereby the-chan nel-sections ofthe trackway are normally disposed in alignment. A scoop-receivingcarriage 27 is movable along the trackway and is provided with forwardand rear pairs of rollers 28 engaging in the track channels, thiscarriage comprising a bottom and sides to house the scoop, and beingopen at its ends.

The scoop or scraper bucket employed is of the usual type comprising apan-shaped body 30 carrying rearwardly projecting handles 31 and open atits forward end, a bail 32 being pivoted to said forward end andconnected with a draft-cable 33 which in the present instance is trainedthrough a roller guide 34 carried by a frame 35 upstanding from thecarriage 27, the cable being then extended to the upper end of thesuperstructure and trained about. the pulley 16 and thence extended to asuitable drum mechanism later to be described.

The scoop or scraper rides upwardl to its engagement with the carriageon an inclined slideway 86, said slideway being carried by a pair ofbars 37 hinged to the adjacent corners of the frame 10, and the up peredge of the slideway terminates short of the frame. The lower portionsof the lower track channels 21 are projected beyond the frame andinclined downwardly to receive the rear carriage rollers 28 whereby acorresponding inclination is imparted to the can riage in its lowerposition, to depress the outer edge of the carriage below the plane ofthe slideway 36 and thus facilitate the engagement of the bucket in thecarriage.

When the machine is not in use, the slideway may be swung upwardly overthe track structure and ample ground clearance is thus provided fortravel of the machine. To in sure proper steadiness of the machine inoperation, support legs38 are threadedly con nected to the corners ofthe frame adiacent the slideway, said legs being adjusted by theirthreaded connection to engage on a suitable base 39.

aking up now the operating means for the dragbucket 30, a counter-shaft40 is mounted on the frame 10 and has drive connect on 41 with theengine 18. This shaft carries a pair of high and low speed gears 42 and43, respectively, meshing with a pair of gears 44 and 45 respectively,mounted on a drumshaft 46 journaled on the frame 10. A winding-drum 47is mounted on the shaft between the gears 44 and 45,'said drum beingloose on the shaft and adapted for connection selectively with either ofthe gears by suitable clutch mechanisms such as shown at 48 and 49respectively. The gear 44 is fixed to the drum shaft 46. Abucket-retracting drum 50 is loosely mounted on the outer end of thedrum-shaft and is adapted for connection therewith by a suitableconventionally shown clutch 51. The countershaft 40 in addition todriving the drums, also affords a drive for the truck of the machine,and thus a pair of beveled gears 52 are loosely mounted on thecrankshaft and controlled by a conventional clutch 53 and lever 54, saidgears meshing with the gear of a centrally depending shaft 55 havingbeveled gear connection with a truck counter-shaft 56 from which chains57 extend to the drive wheels 12 of the truck.

The drag-line 33, trained about the pulley 16, is wound on the drum 47.A second line 58, for retracting the scoop or scraper bucket, is woundon the drum 50 and is extended rearwardly through suitable roller guides59 on the end of the frame. In operation of the apparatus, this line 58is trained about a pair of pulleys (not shown) located at remote pointson the ground and then secured at 60 to the rear end of the scoop orscraper.

In the operation of the apparatus, the drag-line drum 47 is driven byactuating either of its clutches 48 or 49 to draw the scoop or scrapertoward the apparatus and to procure its proper load, the clutch 48furnishing the low speed drive for the scraping or digging action, whilethe clutch 49 furnishes a relatively high speed drive to effect thetravel of the scoop or scraper on the machine. As the scoop or scraperapproaches the machine, it will ride upwardly on the slideway 36 andmove into the carriage. The carriage is normally held against upwardmovement on the trackway by a piv' oted detent lever 61 thereonengageable with a stop 62 on the trackway. As the bucket moves tocarriage-engaging position, however, the bail 32 of the bucket engagesand rocks an angular lever 63 which is pivoted on the frame andconnected by a cord 64 with the detent 61. The carriage is then free tomove upwardly, and as the pull on the drag-line continues, the carriageand its contained bucket move upwardly onto the upper section of thetrachway constituted in the present instance by the channel tracksections 23, the forward rollers 28 of the carriage abutting the ends ofthe arms 24 secured to said track sections, which thus form stopslimiting the movement of the carriage on the upper track sections.Further continued pull on the drag-line will then cause the upper tracksection to swing upwardly about its pivot, thus assuming the positionshown in dotted lines in Fig. 2, wherein the carriage and scoop orscraper are in dumping position to dischargethe contents of the scoop orscraper into a wagon which may be driven thereunder, since the scraperbucket in its dumping position is disposed well to the side of themachine frame by reason of the extension of the super-structure.

is the carriage-track and scraper reach cured, the other end of thebandbeing slidably mountedon a bolt 69 and-engaged by a spring 70 alsomounted on said bolt whereby to impart braking tension to the band. Thistension is relieved in operation of the drum by a wedge lever 71engageable under the movable end of the brake lever to oppose the actionof the spring, and said lever 71 is connected with the knockout rod 66,as shown, to. apply the brake simultaneously with release of the clutchand thus hold the scoop and carriagein dumping position,the brake beingpartly released when it is desired to return the carriage andbucket,which movement is effected by gravity.

While held in dumping position, a continuous jarring action is impartedto the carriage and bucket by means of a plurality of cam projections 72carried on a shaft 73 having drive connection 74 with the counter-shaft40, these cam projections being engag-sable by the. roller-carryingouter en portions of arms 24 which, are secured to the.track sections23, said outer end portions of the arms comprising sections hinged-tothe main portions of the arms and resiliently urged to alignmenttherewith by springs 75 whereby to permit a slight yielding of the armswhen necessary in engaging the cam projections inasmuch as it isimpossible to procure an exact action of the knockout mechanism inreleasing the clutch and applying thebrake of the drag,

line drum. When the carriage and bucket move to dumping position, acontinuous jarring action is thus automatically setup in the directionof sliding movement of the track ivots afforded by the slots of the arms24, whereby any dirt or clayey matter which may tend to stick in thescoop or bucket will be loosened therefrom and dumped.

Summarizing now the structure and operation of the, entire machine, itwill be seenthat I have provideda comparatively simple and highlyefficient apparatus which may be most conveniently and efiicientlyoperated to elevate and dump successive loads of material gathered inthe scoop or scraper bucket 30, said bucket moving from the g n t i ngae t in the l afl s and thence to its dumping position with the carriageupon a continuous and even winding action on the drag-line 33, theoperation of the apparatus being semi-automatic and thus imposingminimum requirementsof at;

tention on the operator.

While I have shown and described a preferred embodiment of my invention,it will be appreciated that various changes and modificationsOfStl'LlCtllIB to meet different conditions of use and that variousphases of my invention may be employed independently of the completestructure described without departing in any manner from the spirit ofmy invention as defined by the ap pended claims. i

What is claimed is:

1. An apparatus of the class described comprisinga pair of inclinedtracks having opposed channel portions, a dump carriage, rollers on saiddump carriage engaged in the channel. portions of the tracks, .the upperend portions of the tracks bein oted, and a draft member connected withsaid carriage for moving it along said tracks and for rocking theupperend portions of the tracks to dump 'the'carriage.

2. An apparatus of the class -described including an inclined trackwayhaving a piv oted upper portion, a carriage movable along said trackway,a load-carrying mein ber engageable with said carriage, and a drag-lineconnected with said member and extending beyond the pivoted portion ofthe trackway.

3. Anapparatus ofthe class described'ineluding an inclined trackway, acarriage movable along said trackway, means for dumping the carriageatthe upper end of the trackway, a load-carrying member mov; able towardand away from .the apparatus and engageable with the carriage, and adrag-line connected with said member and extending along the trackway.

4. An apparatus of the class described including an inclined trackwaypacarriage movable along said trackway, means for.

dumping the carriage at the upper end of the trackway, a load-carryingmember movable toward and away from the apparatus. and engageablewithsaid carriage, a guide carried by the carriage, and a drag lineconnected with said load-carrying -member andextended through the guideand along the trackway.

operable by i traclrway, power actuated means for drawing said dragdine,and means automatically -..=ovement oi the carriage to dumping position:t'or halting operation ct said power actuated means.

6. An apparatus of the class described in cluding an inclined trackway,a carriage movable along said trackway, means for dumping said carriagethe upper end or" the trackway, aload-carrying member movable toward andaway from the apparatus and engageable with the carriage, a draglineconnected with said member and extending along the tracltway, and meansfor holding the carriage against movement on the trackway releasable bymovement of the load-carrying member toward the carriage.

7. An apparatus of the class described including an inclined traclzway.a carriage movable along said trackway, means for dumping: said carriageat the upper end of the trackway, a load-carrying member movable towardand away from the apparatus and engageable with the carriage, a draglineconnected with said member and extending along the trackway, a stopmember adjacent the lower portion of the trackway,

a movable detent on the carriage engageable with said stop-member. andmeans operable by engagement of the load-carrying member therewith forreleasing said detent.

S. An apparatus of the class described including an inclined trackway, acarriage movable along said trackway, means for dumping said carriage atthe upper end of the trackway, a load-carrying member movable toward andaway from the apparatus and engrageable with the carriage, a draglineconnected with said member and eX- tending alonp; the tracltway, a. stopmember adjacent the lower portion of the trackway, a movable detent onthe carriage engageable with said stop member, a lever carried by thecarriage and engageable by the load-carrying member upon movementthereof to engagement with the carriage. and a connection between saidlever and detent.

9. An apparatus of the class described ineluding an inclined trackway, acarriage movable along said trackway. means for dumping said carriage atthe upper end of the trackway, a load-carrying member movable toward andaway from the apparatus and engageable with the carriage, a draglineconnected with said member and extending along the trackway, anupstanding trame on the carriage, a guide for the drag line carried bysaid fran'ie, a stop member adjacent the lower end of the trackway, amovable detent carried by the carriage and engageable with said stopmember, and a lever pivoted to said frame and connected with said detentmember and engageable by the drag-line connecting portion of theload-carrying member to release said detent.

10. An apparatus of the class described comprising a main inclinedtrackway portion, an upper trackway portion forming a continuation ofthe main traclrway portion and pivotally mounted at its end remote fromthe main tracltway portion, a carriage movable along said trackwayportions, a load-carrying member movable toward and away from theapparatus and engageable with said carriage, and a drag-line connectedwith said load-carrying member and extending along the trackway beyondthe pivoted portion thereof.

11. An apparatus of the class described including'a wheeled frame, aslide-way pivoted to one end portion of the frame and adapted to extendadjacent the ground, an inclined trackway mounted on said frame andextending upwardly from said end portion thereof, a carriage movablealong the trackway and adapted to tilt at the upper end portion thereof,a load-carryingxmember movable toward and away from the apparatus andadapted to move over said slideway to engagement with the carriage, anda drag-line for said load-carrying member eX tending along the trackway.

12. An apparatus of the class described including a base-frame, asuper-structure mounted on said base-frame, a pair of inclined trackmembers supported by said super-structure, a second pair of trackmembers supported by said super-structure and normally disposed inalignment with the upper portions of the first named track members, theremote ends of the upper track members being pivotally connected withthe super-structure, a carriage, rollers on said carriage engageablewith the track members, a drum on the main frame, a load-carrying membermovable toward and from the apparatus and engageable with the carriage,a sheave on the super-structure located beyond the pivoted portions ofthe upper track-members, and a drag-line connected with saidload-carrying member and trained about the sheave and wound on the drum.

18. An apparatus of the class described including an inclined trac-kway,a load-carrying member movable along the trackway, means for procuringdumping movement of said load-carrying member at the upper portion ofthe tracltway, and means operable incidental to said dumping movementfor continuously automatically jarring said load-carrying member.

14:. An apparatus of the class described including an inclined trackway,a load-carrying member movable along the trackway, means for procuringdumpingmovement of said load-carrying member at the upper portion of thetrackway. a driven arring member, and an arm movable with theload-carrying member and engageable with the jarring member upon dumpingmovement of said load-carrying member to continuously automatically jarsaid load-carrying member in dumping position.

15. An apparatus of the class described including an inclined trackwayhaving a pivoted upper portion, a load-carrying member movable alongsaid trackway, means for moving said load-carrying member along thetrackway and rocking the pivoted portion of the trackwayto procuredumping position of the load-carrying member, and means connected withthe pivoted portion of the trackway for continuously jarring saidtrackway and load-carrying member in dumping position thereof.

16. An apparatusof the class described including an inclined trackwayhaving a pivoted upper portion, a load-carrying member movable alongsaid trackway, means for moving said load-carrying member along thetrackway and rocking the piv oted portion or the trackway to procuredumping position of the load-carrying member, an arm projecting from thetrackway, and a driven jarring member engageable by said arm indumping'position of the track way and load-carrying member.

17. An apparatus of the class described including a main inclinedtrackway portion, an upper trackw-ay portion adapted to form acontinuation of said main trackway portion and having a slidable pivotmounting at its end remote from the main trackway portion, aload-carrying member movable over said trackway portions, a drag-lineconnected with said load-carrying member and extended beyond the pivotedupper portion of the traokway to swing said track portion to dumpingposition upon movement of the load-carrying member there- .over, andmeans engageable with said track member for jarring said track member inthe direction of sliding movement of its pivot connection.

18. An apparatus of the class described including a main inclinedtrackway portion, an upper trackway portion adapted to form acontinuation of said main trackway portion and having a slidable pivotmounting at its end remote from the main traclrway portion, aload-carryingmember movable over said trackway portions, a drag-lineconnected with said load-carrying member and extended beyond the pivotedupper portion of the trackway to swing said track portion to dumpingposition upon movement of the load-carrying member thereover, a drivenjarring member, and an arm projecting from the pivoted track portion andengageable with said jarring member in dumping position of said trackmember.

19. An apparatus of the class described including a main inclinedtrackway portion, a movable upper trackway portion adapted to form acontinuation of the main trackway portion, a pivot shaft having limitedslidin pivotal connection with the upper end or the upper trackwayportion, a load-carrying member movable over said trackway portions, adrag-line connected with said member and extended beyond the uppertrack'- Way portion to procure dumping pivotal movement of the upper.traclrway portion upon movement of the load-carrying member thereo-ver,a driven jarring member, and

an abutment carried by the upper trackway portion engageable by saidmember in dumping position of the upper track portion.

:20. An apparatus of vthe class described including an inclinedtrackway, a load-carrying member movable along the trackway, means forprocuring dumping movement of said load-carrying member at the upperportion of the traclrway, a driven jarring member, and a resilientlyyieldable member movable with the load-carrying member and engaging saidjarring member upon move ment of the load-carrying member to dumpingposition. I p

21. An apparatus of the class described including an inclined trackway,a load-carrying member movable along the trackway, means for procuringdumping movement of said load-carrying member at the upper portion ofthe trackway, a driven jarring member, a resiliently yieldable membermovable with the load-carrying member and engaging said jarring memberupon movement of the load-carrying member to dumping position, means formoving said load-carrying member along the trackway to dumping position,and means for automatically halting operation of the first named meansupon said load-carrying member reaching dumping position. a

22. An apparatus of the class described including a main inclinedtrackway portion, a movable upper trackway portion adapted to form acontinuation of the main trackway portion, a load-carrying membermovable over said trackway portions, means formoving the load-carryingmember onto the up per trackway portion, and then rocking said uppertrackway portion to. dump the loadcarrying member, a driven jarringmember, and a resiliently yieldable arm projecting from the uppertrackway portion and engageable with said jarring member in clumpingposition of the trackway portion.

23. An apparatus of the class described including an inclined trackway,a load-carrying member movable along the trackvvay; means for procuringdumping movement of said load-carrying member at the upper portion ofthe trackway, a drivenjarring memher. and a resiliently yieldable armmovable with the load-carrying member and engaging said jarring memberupon movement of the load-carrying member to dumping position, theresiliently yielding action of said arm being exerted transversely ofits direction of movement by the arring member.

2a. An apparatus of the class described including a pair of inclinedtracks having opposed channel portions, the upper end portions of thetracks being pivoted, a dump carriage, rollers on said dump carriageenthe channel portions of the tracks a load-carrying membermovabletoward and away from the apparatus a line-guide on the carriage,and a drag-line secured to said load-carrying member and passed throughsaid guide and extended along the tracks beyond the pivoted upper endportions thereof.

25. An apparatus of the class described includinga wheeled frame armspivoted to said frame and adapted to eXtend outwardly therefrom adlyentthe ground in inclined positioma shdeway mounted on said arms, the innerer ge of said slide-way being spaced from the frame, an inclinedtrackway mounted on the frame and extending upwardly from the portionthereof adjacent the slideway, a carriage movable along the trackway andadapted to project beyond the frame with its receiving edge portionadjacent the inner edge of the slidewa-y a loadcarrying member movabletoward and away from the apparatus, a drag-line connected with saidmember and extended along the trackway, and means for procuring dumpingmovement of said carriage adjacent the upper end of the trackway.

26. An apparatus of the class described including an inclined trackway,a load-carrying member movable along said trackway, means for procuringdumping movement of said member incidental to its movement at the upperend portion of the trackway, a sheave adjacent the upper end portion ofthe trackway, a drum, clutch-controlled means for driving said drum, abrake for said drum, a drag-line connected with the load-carrying memberand trained about said sheave and wound on the drum, and means operableupon dumping movement of the load-carrying member for automaticallyreleasing said clutch and applying the said brake to maintain theload-carrying memher in dumping position.

27. An apparatus of the class described including an inclined trackway,a load-carrying member movable along said trackway, means for procuringdumping movement of said member incidental to its movement at the upperend portion of the trackway, a sheave adjacent the upper end portion ofthe trackway a drum, clutch-controlled means for driving said drum, a.brake for said drum, a drag-line connected with the loadcarrying memberand trained about said sheave and wound. on the drum, means operableupon dumping movement of the loadcairying member for automaticallyreleasing said clutch and applying the said brake to maintain theload-carrying member in dumping position and means for automaticallyimparting jarring movement to said load-carrying member in dumpingposition thereof.

In testimony that I claim the foregoing I have hereunto set my hand atMilwaukee, in the eounty of Milwaukee and State of Wisconsin.

NORMAN C. WOODIN.

